Gav and new Slow Mo Guy Will run a gauntlet of destruction. Melons, mannequins and a car are about to get it. On this channel we don't usually film an entire video in less than 40 minutes in the car park of the YouTube Space with about 50 people watching, but this one was a bit special. Massive thanks to the LEGEND that is Will Smith for popping on Dan's labcoat and becoming a Slow Mo Guy for a day. Make sure you go and see Gemini Man!